docs: def make_viewer(self, title=None, at=None):
          """Makes a statistics viewer from the profiling result.
          """
          viewer = StatisticsViewer()
          viewer.set_profiler_class(self.__class__)
          stats, cpu_time, wall_time = self.result()
          viewer.set_result(stats, cpu_time, wall_time, title=title, at=at)
          viewer.activate()
          return viewer